Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Patrick A. Hays"'
Publikováno v:
Science & Justice. 59:67-74
Recently, a sample containing cyclopropylfentanyl was analyzed at this laboratory. Cyclopropylfentanyl began to appear in the United States' illicit drug markets in 2017. Unfortunately, cyclopropylfentanyl presents an analytical challenge due to its
Publikováno v:
Forensic Chemistry. 8:64-71
In the United States, the illicit drug market has recently been flooded with fentanyl and fentanyl-related compounds. The ability to easily synthesize fentanyl-related compounds by simply using different precursors has added to the difficulty of fore
Publikováno v:
Forensic Chemistry. 17:100203
The synthetic opioid fentanyl has consistently been on the illicit drug market within the United States for more than five years. One of the many challenges to law enforcement is determining the manner in which the fentanyl is being synthesized. Know
Publikováno v:
Drug Testing and Analysis. 9:462-469
Two significant compounds often found in the gas chromatographic analysis of the acid/neutral extracts from illicit heroin have remained uncharacterized for 30 years. The unknown compounds are referred to as the 'B' and 'C' compounds. It has been pos
Autor:
Jennifer B. McConnell, Jennifer M. Tuten, Jaclyn L. Brown, Steven G. Toske, Ira S. Lurie, Etienne R. Vazquez, Erin E. Miller, Patrick A. Hays, Monica Z. Phillips, Elizabeth M. Guest
Publikováno v:
Drug Testing and Analysis. 9:453-461
A trace processing impurity found in certain methamphetamine exhibits was isolated and identified as trans-N-methyl-4-methyl-5-phenyl-4-penten-2-amine hydrochloride (1). It was determined that this impurity was produced via reductive amination of tra
Autor:
Mary G. Reynolds, Whitni B. Davidson, Aaron T. Curns, Craig S. Conover, Gregory Huhn, Jeffrey P. Davis, Mark Wegner, Donita R. Croft, Alexandra Newman, Nkolika N. Obiesie, Gail R. Hansen, Patrick L. Hays, Pamela Pontones, Brad Beard, Robert Teclaw, James F. Howell, Zachary Braden, Robert C. Holman, Kevin L. Karem, Inger K. Damon
Publikováno v:
Emerging Infectious Diseases, Vol 13, Iss 9, Pp 1332-1332 (2007)
For the 2003 monkeypox virus (MPXV) outbreak in the United States, interhuman transmission was not documented and all case-patients were near or handled MPXV-infected prairie dogs. We initiated a case–control study to evaluate risk factors for anim
Externí odkaz:
https://doaj.org/article/753ed4904cad4bf89c48dd7e9de6961a
Autor:
Susan C. Kerr, Erin E. Miller, Patrick A. Hays, Jaclyn L. Brown, Monica Z. Phillips, Steven G. Toske
Publikováno v:
Forensic Chemistry. 13:100140
N-butylamphetamine and N-cyclohexylamphetamine have been found to be useful target compounds for tracking P2P-based methamphetamine produced using nitrostyrene chemistry. Since 2015, these two process impurities have been detected at low levels in ma
A processing method enabling the use of peak height for accurate and precise proton NMR quantitation
Autor:
Robert A. Thompson, Patrick A. Hays
Publikováno v:
Magnetic Resonance in Chemistry. 47:819-824
In NMR, peak area quantitation is the most common method used because the area under a peak or peak group is proportional to the number of nuclei at those frequencies. Peak height quantitation has not enjoyed as much utility because of poor precision
Publikováno v:
Drug testing and analysis. 9(3)
Two significant compounds often found in the gas chromatographic analysis of the acid/neutral extracts from illicit heroin have remained uncharacterized for 30 years. The unknown compounds are referred to as the 'B' and 'C' compounds. It has been pos
Autor:
Steven G, Toske, Jennifer B, McConnell, Jaclyn L, Brown, Jennifer M, Tuten, Erin E, Miller, Monica Z, Phillips, Etienne R, Vazquez, Ira S, Lurie, Patrick A, Hays, Elizabeth M, Guest
Publikováno v:
Drug testing and analysis. 9(3)
A trace processing impurity found in certain methamphetamine exhibits was isolated and identified as trans-N-methyl-4-methyl-5-phenyl-4-penten-2-amine hydrochloride (1). It was determined that this impurity was produced via reductive amination of tra